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Q. What is compound?
A compound is a substance which consists of two or more elements chemically combined. The elements in a compound aren't simply mingled together as they are in a mixture. In its place they are combined in a way such that the compound has properties that are different from those of the elements of which it is composed. Every compound is represented by a formula a combination of the symbols of the elements that make up the compounds. You may already recognize some chemical formulas such as H2O for water, NaCl for table salt and NH3 for ammonia.
Q. How to determine wavelength of electromagnetic waves? The frequency as well as velocity of a wave determines its wavelength the distance between equivalent points on a con
Indicate the nature of bonding in diamond: (1) Covalent (2) Ionic (3) Coordinate (4) Hydrogen Ans: Covalent
Physical Properties of Cinnamic Acid (a) Cinnamic Acid is a white crystalline solid and its melting point 133° C . (b) Cinnamic Acid is sparingly soluble in water. (c) Ci
Drugs - Chemistry in Action Drugs may be a single chemical atom or a combination of two or more dissimilar substances. An perfect drug should assure the following needs, Whi
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This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other. Thus, it must be a [14s + 2a] or a [14a + 2s]
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